--- en.yml.back	2015-06-09 16:17:01.133220874 +0530
+++ en.yml	2015-06-09 16:11:47.725411843 +0530
@@ -202,6 +202,7 @@
   error_unable_delete_issue_status: 'Unable to delete issue status'
   error_unable_to_connect: "Unable to connect (%{value})"
   error_attachment_too_big: "This file cannot be uploaded because it exceeds the maximum allowed file size (%{max_size})"
+  error_invalid_file_extension: "invalid file extension!, allowed file types are .txt,.csv,.htm,.html, .xml, .css, .doc, .docx, .xls, .xlsx, .rtf, .ppt, .pptx, .pdf, .swf, .flv, .avi, .wmv, .mov, .jpg, .jpeg, .gif, .png "
   error_session_expired: "Your session has expired. Please login again."
   warning_attachments_not_saved: "%{count} file(s) could not be saved."